Malicious PDF — malware analysis report

Static analysis result for SHA-256 39f7413e831739f5…

MALICIOUS

PDF

68.7 KB Created: 2021-03-03 00:59:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 244debabe2d50fb2e55ad541566476b3 SHA-1: 66d2755cf25ca3e562198ee20c6b73f2c17ae1cb SHA-256: 39f7413e831739f586886fa8a0b4b138d0b1cfca045f49fd4ae2b21747764506
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs pointing to disposable hosting, a common tactic for phishing and malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to redirect users to malicious sites, likely as part of a spearphishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9959

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://lozipotod.ru/wix?keyword=e36+manual+pedal+set PDF link annotation
    • http://kogemotuju.getenjoyment.net/walmart_black_friday_hours_online.pdfIn PDF document text
    • http://janorewaxeno.mygamesonline.org/lewazogodixadoniji.pdfIn PDF document text
    • http://xoziduso.mypressonline.com/66661469951.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428033/normal_603ebff771669.pdfIn PDF document text
    • https://tonuvufew.weebly.com/uploads/1/3/1/4/131438708/vupolutizuzelu_wutoxurawir_fogufuga_farogoguna.pdfIn PDF document text
    • http://sibogufurab.medianewsonline.com/doluwapazanufe.pdfIn PDF document text
    • http://wuxapogetal.iblogger.org/mozirubatowasod.pdfIn PDF document text
    • http://labifovejes.mypressonline.com/83480553555.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://diwavubodinaroj.myartsonline.com/how_to_calculate_man_hours_in_excel.pdfIn PDF document text
    • http://dakafatuvuguviz.atwebpages.com/ti_89_titanium_calculator_manual.pdfIn PDF document text
    • http://sajanigikedu.epizy.com/4693116098.pdfIn PDF document text
    • http://fipunagofalava.rf.gd/jirajopikone.pdfIn PDF document text
    • http://fegosuzix.epizy.com/80618083411.pdfIn PDF document text
    • http://xalovizavana.rf.gd/the_weather_report_amritsar.pdfIn PDF document text
    • http://jadokekuw.rf.gd/wimpy_kid_deep_end_free.pdfIn PDF document text
    • http://tasukifuputuf.epizy.com/37980628542.pdfIn PDF document text
    • http://jatuxijor.epizy.com/dumugewesusa.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d888.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD888 5284 bytes
SHA-256: 11ea9228a33dacbf0173d3f3c08c4e03ea3d4e7a2e8f963b347497441b11925c
font_01_sfnt_off0000ea72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA72 13560 bytes
SHA-256: d4cab066f9a609525dd71931dd9d3ff802912da7d5fbb19912eebb56ce578b7d

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